import Observer from "./Observer";

export default function (value) {
    // 如果进来的值不是对象，那就直接啥也不做
    if (typeof value != 'object') return;
    let ob;

    if (typeof value.__ob__ != 'undefined') {
        ob = value.__ob__;
    } else {
        ob = new Observer(value);
    }
    return ob;
}